Malicious PDF — malware analysis report

Static analysis result for SHA-256 aea538997e5b90e8…

MALICIOUS

PDF

39.2 KB Created: 2020-08-04 07:34:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a39b19c9c8d2e15b65e05e8219dfdb0f SHA-1: a8b8b625ec67cb53455ed330817666db55d29636 SHA-256: aea538997e5b90e8114f2386f2ad3b2c5470c678552c5ddd94ddd95c51a88529
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, including one identified as a malicious redirector. The document body text and embedded links suggest a lure for downloading content, which ultimately leads to the malicious URL. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=spider+man+comic+pdf+download In PDF document text
    • http://files.stumpysfabworks.com/uploads/1/3/1/6/131606011/86d8801f973.pdfIn PDF document text
    • http://files.spilledbeanscoffee.com/uploads/1/3/2/3/132303131/wadumitot.pdfIn PDF document text
    • http://files.countryrddesigns.com/uploads/1/3/1/4/131453989/0a78d793.pdfIn PDF document text
    • http://files.ackgs.com/uploads/1/3/2/7/132740836/372498.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8630/6710/files/68034539391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/dijekudogidebejanot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6007/5427/files/41817821742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/pedodusajowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/62461153532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5830/files/11459750125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1537/1932/files/death_grips_quotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0909/7376/files/how_to_find_youtube_video_id.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/38105870729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8764/2267/files/zenekoresuvedodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7384/6952/files/82334715275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/vafusenuzejoxuxojipono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6493/1992/files/manalijumij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/88920142565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/nidoterutotodesufidumuli.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A18 5316 bytes
SHA-256: ddd028a8cb278b9fd1bd07dbd306e488b56271500484a71a719f605b217d6977
font_01_sfnt_off00006c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2B 10280 bytes
SHA-256: 44ec59ff843f418cf4edff7f74808395fbafc2502186706f50d0f6d27d07319b

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